Baker&#39;s oven.



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Patented May 30,

BAKER'S OVEN.

W. SCHWARTZ.

APPLICATION FILED JULY 2, 1902.

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YHE NORRIS PETERS 50-. "SHVNDTO", D- C.

W. SCHWARTZ.

BAKBR'S OVEN.

APPLICATION FILED JULY 2, 1902.

Patented May 30, 1911.

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n MORRIS PETERS co. WASHINGTON. 0 c4 W. SCHWARTZ.

BAKERS OVEN.

APPLICATION FILED JULY 2, 1902. 993 A64, Patented May 30, 1911.

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WILLIAM SCHWARTZ, 0F NORRISTOWN, PENNSYLVANIA.

BAKERS OVEN.

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Specification of Letters Patent.

Patented May 36, 1911.

Application filed July 2, 1902. Serial No. 114,049.

To all whom it may concern:

Be it known that T, WILLIAM SCHWARTZ, a citizen of the United States,residing at Norristown, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvements inBakers Ovens, of which the following is a specification.

Objects of the present invention are to provide simple, reliable andefficient means for obtaining at comparatively little expense theadvantages which follow the use of steam in baking; to insure evenheating of the oven; and to obtain at a minimum of cost the maximum ofbeneficial effect of steam baking.

To these and other ends hereinafter set forth, the invention, stated ingeneral terms, comprises the improvements to be presently described andfinally claimed.

The nature, characteristic features and scope of the invention will bemore fully understood from the following description taken in connectionwith the accompanying drawings, forming part hereof and in which Figure1, is a front elevational view of a furnace embodying features of theinvention. Fig. 2, is a sectional plan view showing the floor of theoven, the grate, and also illustrating features of the invention. Fig.8, is a plan view partly in section illustrating the top of the furnaceand drawn to a reduced scale. Fig. i, is a longitudinal sectional viewtaken on the line 4-t, of Fig. 2; and Fig. 5, is an edge view of adamper hereinafter described.

In the drawings, 1 is a chimney internally subdivided into a number ofseparate passages or flues which will communicate, as will be described,with the various flues that lead from the oven 2. The purpose of this isthat since each flue from the oven extends through the chimney separatefrom the others it follows that the draft in each is uninfiuenced by thedraft in the others, and in this way it is possible to cause each of thefines from the oven to take its appropriate allowance of hot products,and in that way the oven is uniformly heated.

3, is a boiler or water heater which is located in proper relation tothe fire-place 4:, for receiving heat from it. As shown it is locatedabove the fire-place and supported by the brickwork. From this boiler 8,there extends a valved pipe 5, which penetrates the oven 2, near thefront and extends around its interior, as shown in Fig. 2, slopingdownward as it does so until finally it communicates with a box 6, whichis embedded in the brickwork and which may be provided with a trappedoverflow 7. The pipe 5, inside of the oven is perforated as is also theportion of the box 6, which is exposed to the interior of the oven. Inheat in u the oven the i e 5 or that oortion of a p P P 7 1 it which iswithin the oven, as well as the box 6, become heated, and afterwardduring the baking when hot water from the boiler is permitted to escapefrom the boiler through the pipe 5, it runs into the hot portion of thatpipe and is there vaporized and converted into steam, and the latterescaping from the perforations reaches the interior of the oven. If someof the water is not converted into steam it may run into the box 6, andfind its way out through the overflow 7 8, is a damper located at therear end of the fire-place, where it communicates with the oven. Thisdamper is adapted to remain in either of two positions, that is to say,in either vertical position, as shown in Fig. 5, or in the horizontalposition which it would occupy if turned down toward the right in Fig.5. When steam is being used in the oven 2, the damper is put, as bymeans of a poker, into the position shown in Fig. 5, in which itinterrupts communication. between the fire-place and the oven and thusprevents passage of steam from the oven into the fire-place. However,when the fire is being burned to preheat the oven the damper 8, is inopen position. The lip 9, serves to support the damper 8, and the damperis pivoted at its lower edge as at 10. A, introduces cold air to thefire.

In heating up the oven a fire is built in the fire-place t, and thedamper 8, is open so that the hot products from the fire enter theinterior of the oven 2. The flue a, Fig. 4:, which leads from the sideof the fireplace is closed by the damper a Thus all of the hot productsare compelled to traverse the oven and in doing so heat it and also thepipe 5 and box 6. While this is going on heat is imparted to the boiler3. In leaving the fire-place the products divide. Part of them traveldown through the flues b and c, and thus reach the flues b and 0, of thechimney. The other part of the products rise up over the top of theoven, Fig. 3, through the flues (Z and e. The flue d, reaches the fluecl, of the chimney, as does also the flue 6. Thus it will be seen that aportion of the products of combustion traversing the flues e and (Z,goes over the top of the oven, while the portion traversing the flues cand 5, go under the oven, and they all reach the separate compartmentsof the chimney and the flue a, Figs. 2 and 3, joins the compartment ofthe chimney which corresponds to the flue 0.

Each of the flues is provided with a damper and the dampers aredesignated Z2 0 e and 621, on Fig. 1. There is a flue f, Fig. 3, whichis provided with a damper f and which joins the fiue b, in the chimney.It serves to permit gas, etc., to escape when the oven door is open andthus prevents the same from coming out into the face of the observer.Clearly the draft in each flue may be regulated by means of theappropriate damper, or preparatory to and during baking the dampers 0 6e and (Z are closed, and the damper a is open and the damper 8., isclosed, so that the oven is entirely shut off, and whatever products mayescape from the fire-place do so by the flue a, and it may be regulatedby its damper a all as may be required. The oven having been thus heatedand closed at the appropriate time during the baking operation, water ispermitted to reach the heated part ofthe pipe 5, and upon doing so itforms steam, which escapes through the perforations into the oven as hasbeen described.

It will be obvious to those skilled in the art to which the inventionrelates that modifications may be made in details without departing fromthe spirit thereof, hence I do not limit myself to the preciseconstruction and arrangement of parts hereinabove set forth andillustrated in the accompanying drawings, but

Having thus described the nature and objects of the invention, what Iclaim as new and desire to secure by Letters Patent is 1. Incombination, a baking oven having a single fire-place arranged topreheat the oven by discharging products of combustion through it, meansfor closing the oven including a damper arranged to close'communicationbetween the oven and fire-place, a perforated water box in the wall ofthe oven, and an inclined perforated water pipe extending from theoutside into and around the oven and communicating with the water box,substantially as described.

2. In combination, a baking oven having a single fire-place arranged topreheat the oven by discharging products of combustion through it, meansfor closing the oven including a damper arranged to close communicationbetween the oven and fire-place, a perforated water box located in thewall of the oven and provided with an overflow, and an inclinedperforated water pipe extending from the outside into and around theoven and communicating with the water box, substantially as described.

3. In combination, a baking even having a single fire-place arranged topreheat the oven by discharging products of combustion through it andhaving flues extending from different parts of the oven to conveyproducts of combustion therefrom, and a subdivided chimney containingvertically ranging compartments of which one communicates with eachflue, substantially as described.

4. In combination, a baking oven having a single fire-place arranged topreheat the oven by discharging products of combustion through it, achimney subdivided into compartments, flues respectively provided withdampers and communicating with the oven and with the separatecompartments of the chimney, a damper between the fire-place and theoven, and an inclined perforated water pipe arranged in the oven,substantially as described.

5. In combination, a baking oven having a single fire-place arranged topreheat the oven by discharging products of combustion through it, achimney subdivided into compartments, flues respectively provided withdampers and communicating with the oven and with the separatecompartments of the chimney, a damper between the fire-place and theoven, a dampered flue from the fireplace to one of the compartments ofthe chimney, a boiler arranged in proximity with the fire-place, and awater pipe communicating with the boiler and extending into andperforated within the oven, substantially as described.

6. In combination, a baking oven having a single fire-place arranged topreheat the oven by discharging products of combustion through it, achimney subdivided into compartments, flues respectively provided withdampers and communicating with the oven and with the separatecompartments of the chimney, a damper betwen the fire-place and theoven, a dampered flue from the fire-place to one of the compartments ofthe chimney, a boiler arranged in proximity with the fireplace, aperforated water box at the wall of the oven, and an inclined pipecommunicating with the boiler and with the box and perforated where itlies within the oven,.substantially as described.

7. In a baking oven the combination of a In testimony whereof I havehereunto fire place provided at its exit with a groove signed my name.

having on the fire place side a rest, of, a

damper provided with a lower edge seated WILLIAM SCHWARTZ 5 in thegroove to constitute a pivot and pro- Witnesses:

vided with a projecting lip adapted to abut W. J. JACKSON,

on the rest, substantially as described. FRANK E. FRENCH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

